Merge pull request #146790 from Prillan/ZHF-fix-envisage-build

python3Packages.envisage: disable tests of broken optional feature

pkgs/development/python-modules/envisage/default.nix

···
-{ lib, fetchPypi, isPy27
+{ lib
+, fetchPypi
+, isPy27
 , buildPythonPackage
-, traits, apptools, pytestCheckHook
-, ipykernel, ipython, setuptools
+, traits
+, apptools
+, pytestCheckHook
+, ipython
+, setuptools
 }:
 
 buildPythonPackage rec {
···
     sha256 = "8864c29aa344f7ac26eeb94788798f2d0cc791dcf95c632da8d79ebc580e114c";
   };
 
+  # for the optional dependency ipykernel, only versions < 6 are
+  # supported, so it's not included in the tests, and not propagated
   propagatedBuildInputs = [ traits apptools setuptools ];
 
   preCheck = ''
···
   '';
 
   checkInputs = [
-    ipykernel ipython pytestCheckHook
+    ipython
+    pytestCheckHook
   ];
 
   meta = with lib; {